1. School of Chemistry and Biochemistry, School of Materials Science and Engineering, Center for Organic Photonics and Electronics, and Georgia Tech Polymer Network, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
2. Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
3. Department of Chemistry/Biochemistry, University of North Georgia, Dahlonega, Georgia 30597, United States